<template>
  <div>
    <div class="user-info-head" @click="editCropper()">
      <img :src="avatar" title="点击上传头像" class="img-circle img-lg" />
    </div>
    <el-dialog
      :title="title"
      :visible.sync="open"
      width="800px"
      append-to-body
      @opened="modalOpened"
      @close="closeDialog"
    >
      <el-row>
        <el-col :xs="24" :md="12" :style="{ height: '350px' }">
          <vue-cropper
            v-if="visible"
            ref="cropper"
            :img="options.img"
            :info="true"
            :auto-crop="options.autoCrop"
            :auto-crop-width="options.autoCropWidth"
            :auto-crop-height="options.autoCropHeight"
            :fixed-box="options.fixedBox"
            @realTime="realTime"
          />
        </el-col>
        <el-col :xs="24" :md="12" :style="{ height: '350px' }">
          <div class="avatar-upload-preview">
            <img :src="previews.url" :style="previews.img" />
          </div>
        </el-col>
      </el-row>
      <br />
      <el-row>
        <el-col :lg="2" :md="2">
          <el-upload
            action="#"
            :http-request="requestUpload"
            :show-file-list="false"
            :before-upload="beforeUpload"
          >
            <el-button size="small">
              选择
              <i class="el-icon-upload el-icon--right" />
            </el-button>
          </el-upload>
        </el-col>
        <el-col :lg="{ span: 1, offset: 2 }" :md="2">
          <el-button icon="el-icon-plus" size="small" @click="changeScale(1)" />
        </el-col>
        <el-col :lg="{ span: 1, offset: 1 }" :md="2">
          <el-button
            icon="el-icon-minus"
            size="small"
            @click="changeScale(-1)"
          />
        </el-col>
        <el-col :lg="{ span: 1, offset: 1 }" :md="2">
          <el-button
            icon="el-icon-refresh-left"
            size="small"
            @click="rotateLeft()"
          />
        </el-col>
        <el-col :lg="{ span: 1, offset: 1 }" :md="2">
          <el-button
            icon="el-icon-refresh-right"
            size="small"
            @click="rotateRight()"
          />
        </el-col>
        <el-col :lg="{ span: 2, offset: 6 }" :md="2">
          <el-button type="primary" size="small" @click="uploadImg()">
            提 交
          </el-button>
        </el-col>
      </el-row>
    </el-dialog>
  </div>
</template>

<script>
  import { mapGetters } from 'vuex'
  import store from '@/store'
  import { VueCropper } from 'vue-cropper'
  import { uploadAvatar } from '@/api/system/user'

  export default {
    components: { VueCropper },
    props: {
      user: {
        type: Object,
      },
    },
    data() {
      return {
        // 是否显示弹出层
        open: false,
        // 是否显示cropper
        visible: false,
        // 弹出层标题
        title: '修改头像',
        options: {
          img: this.avatar, // 裁剪图片的地址
          autoCrop: true, // 是否默认生成截图框
          autoCropWidth: 200, // 默认生成截图框宽度
          autoCropHeight: 200, // 默认生成截图框高度
          fixedBox: true, // 固定截图框大小 不允许改变
        },
        previews: {},
      }
    },
    computed: {
      ...mapGetters({
        avatar: 'user/avatar',
      }),
    },
    methods: {
      // 编辑头像
      editCropper() {
        this.open = true
      },
      // 打开弹出层结束时的回调
      modalOpened() {
        this.options.img = this.avatar
        this.visible = true
      },
      // 覆盖默认的上传行为
      requestUpload() {},
      // 向左旋转
      rotateLeft() {
        this.$refs.cropper.rotateLeft()
      },
      // 向右旋转
      rotateRight() {
        this.$refs.cropper.rotateRight()
      },
      // 图片缩放
      changeScale(num) {
        num = num || 1
        this.$refs.cropper.changeScale(num)
      },
      // 上传预处理
      beforeUpload(file) {
        if (file.type.indexOf('image/') == -1) {
          this.$modal.msgError(
            '文件格式错误，请上传图片类型,如：JPG，PNG后缀的文件。'
          )
        } else {
          const reader = new FileReader()
          reader.readAsDataURL(file)
          reader.onload = () => {
            this.options.img = reader.result
          }
        }
      },
      // 上传图片
      uploadImg() {
        this.$refs.cropper.getCropBlob((data) => {
          const formData = new FormData()
          formData.append('avatarfile', data)
          uploadAvatar(formData).then((response) => {
            this.open = false
            this.options.img = process.env.VUE_APP_BASE_API + response.imgUrl
            store.commit('SET_AVATAR', this.options.img)
            this.$modal.msgSuccess('修改成功')
            this.visible = false
          })
        })
      },
      // 实时预览
      realTime(data) {
        this.previews = data
      },
      // 关闭窗口
      closeDialog() {
        this.options.img = store.getters.avatar
        this.visible = false
      },
    },
  }
</script>
<style scoped lang="scss">
  .user-info-head {
    position: relative;
    display: inline-block;
    height: 120px;
    width: 120px;
    background: #c0c4cc;
    border-radius: 50%;
  }

  .user-info-head:hover:after {
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    font-size: 24px;
    font-style: normal;
    line-height: 120px;
    color: #eee;
    cursor: pointer;
    content: '+';
    background: rgba(0, 0, 0, 0.5);
    border-radius: 50%;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
  }
</style>
